Hi all I'm trying to implement the attached switch cap circuit.
I have the op amp par working if I just put in a AC signal, but as soon as I put in the switch cap part, I get:
ERROR(ORPSIM-15138): Convergence problem in transient analysis at Time = 42.30E-06.
Time step = 421.0E-21, minimum allowable step size = 1.000E-18
These voltages failed to converge:
V(N48709) = 4.116V \ 4.116V
V(N90511) = 2.382V \ 2.382V
V(N51573) = 4.049V \ 4.049V
V(VOUT) = 3.141V \ 3.141V
V(N101867) = 3.488V \ 3.488V
These supply currents failed to converge:
I(V_V22) = -174.07nA \ -173.33nA
I(V_V29) = -3.401nA \ -2.968nA
I(V_V30) = 41.97nA \ 42.52nA
I(V_V31) = -12.73pA \ -36.38pA
Last node voltages tried were:
NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE NODE VOLTAGE
( VOUT) 3.1410 (N48709) 4.1157 (N48713) 5.0000 (N48725) 1.4192
(N48737) .6801 (N48757) .6130 (N48871) 1.6000 (N48889) .7000
(N51573) 4.0489 (N60955) 2.5000 (N61751) 1.6000 (N63719) 5.0000
(N63797) 2.5003 (N90511) 2.3820 (N101549) 2.5011
(N101806) 5.0000 (N101867) 3.4881
(N628250) .7000 (N637831) 465.0E-06
**** Interrupt ****
Can some one help me realize the error?
Thanks